Spark plug cover



FIG. 1 is an elevational view of the right side of the spark plug covershowing my new design, the left side of the spark plug cover, inelevation, being of similar appearance.

FIG. 2 is a rear elevational view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a front elevational view thereof.

FIG. 5 is a bottom view thereof.

The ornamental design for a spark plug cover, as shown and described.